Last name Cviker (Zwicker 
, Cviker 
) , globally, is quite a common surname. The last name Cviker is characteristic of Switzerland, where it is quite a rare surname, Canada, and Germany. Measured by absolute frequency, it is the most numerous in Germany, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Zwicker | Germany, Switzerland, United States, Canada, Brazil |
| Cviker | Croatia, Australia |